## Chapter 28 - Straight Line in Space - Free PDF Download

## FAQs on RD Sharma Solutions for Class 12 Math Chapter 28 - Straight Line in Space - Free PDF Download

1. How to define a straight line in Math?

We can define a straight line as the set of all points between and extending beyond two points. In addition to that two properties of straight lines in Euclidean geometry. First is they have only one dimension, length, and second is that they can be extended in two directions forever.

2. Why should students refer to the RD Sharma textbook?

RD Sharma is one of the most important reference books for high school grades. It is recommended to every high school student. The book covers every single topic in detail. It provides in-depth knowledge of every single topic and covers both theory and problem-solving concepts. This book is highly helpful for the students who wish to secure full marks in the exam.

3. Write down the two-point form of the equation of a line in space?

The two-point form of the equation of a line in space is given by the below equation. (x-x_{1})/(x_{2}-x_{1}) = (y-y_{1})/(y_{2}-y_{1}) = ( z-z_{1})/(z_{2}-z_{1})

4. How is the position of points relative to a given line according to RD Sharma Class 11 Solutions Chapter 23 - The Straight Lines (Ex 23)?

We’ll assume and let the equation of the given line be ax + by + c = 0 and further, let the coordinates of the two given points be P(x_{1}, y_{1}) and Q(x_{2}, y_{2}). To understand further, we’ll let the two points be on the same side of the straight line ax + by + c = 0, If ax_{1} + by_{1} + c and ax_{2}_{ }+ by_{2} + c have the same sign. Now, the two points are on the opposite sides of the straight line ax + by + c = 0, If ax_{1} + by_{1} + c and ax_{2} + by_{2}+ c have opposite signs.

5. What are the various forms of the equation of a line according to RD Sharma Class 11 Solutions Chapter 23 - The Straight Lines (Ex 23)?

The equation of a line is y = k if it is at a distance of k and parallel to the X-axis. The equation for a line parallel to the Y-axis at a distance of c from the Y-axis is x = c. Form of the slope-intercept: y = mx + c is the equation for a line with slope m and an intercept c on the y-axis. One point-slope shape is as follows: y – y_{1} = m (x – x_{1}) is the equation of a line that passes through the point (x_{1}, y_{1}) and has a slope of m.